<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script type='text/javascript' src='../js/vue.js'></script>

</head>

<body>
    <div id="root">

        <h2>人员列表</h2>
        <button @click="updateMei">更新马冬梅信息</button>
        <ul>
            <li v-for='(person,index) in persons' :key='person.id'>
                {{index}}--{{person.name}}-{{person.age}}
            </li>
        </ul>


    </div>
    <script>
        Vue.config.productionTip = false;

        new Vue({
            el: '#root',
            data: {
                keyWord: '',
                sortType: 0,
                persons: [
                    { id: '001', name: '马冬梅', age: 18 },
                    { id: '002', name: '周冬雨', age: 16 },
                    { id: '003', name: '周杰伦', age: 21 },
                    { id: '003', name: '温兆伦', age: 19 },
                ],
            },

            methods:{
                updateMei(){
                    // //成功 ==>麻烦
                    // this.persons[0].age = 20;

                    this.persons[0] = {id: '001', name: '马冬梅', age: 30 }
                }
            }


        })
    </script>
</body>

</html>


